Business Email Compromise (BEC) is a cyberattack where an attacker impersonates a trusted individual—such as an executive, employee, or vendor—to trick victims into sending money or sharing sensitive information, or to compromise another account.
BEC attacks are highly effective because they exploit trust, often bypassing traditional security tools.
How a BEC Attack Works
A typical BEC attack follows four steps:
- Reconnaissance – Attackers research employees, vendors, and communication patterns
- Account Compromise or Spoofing – They gain access to or impersonate a trusted email account
- Social Engineering – A convincing request is sent (e.g., wire transfer or invoice change)
- Execution – The victim unknowingly transfers funds or data
Why BEC Attacks Are Increasing
BEC attacks are growing because they:
- Use compromised accounts or lookalike domains
- Avoid malware, making them harder to detect
- Extend beyond email into security blind spots: browser and SaaS activity
Modern campaigns are also evolving with techniques like gated phishing, where attackers tailor content to be viewed only by the intended recipient, thereby evading detection and increasing success rates.
Read more:
https://keepaware.com/blog/gated-phishing-and-how-bec-continues-to-evade-security-filters
Preventing BEC — And Why Traditional Security Falls Short
Most organizations follow well-established best practices to prevent Business Email Compromise (BEC). These controls are necessary, but they weren’t built for how modern BEC attacks actually operate today.
The Standard Approach to Preventing BEC
Security teams typically focus on three areas:
Strengthening Identity Security
- Enforcing phishing-resistant MFA
- Monitoring login and session activity
Training Employees
- Verifying financial requests
- Watching for urgency or anomalies
- Reporting suspicious emails to security teams
Monitoring Account Activity
- Detecting session hijacking
- Identifying unusual email behavior
- Preventing data exfiltration
These are foundational controls, but they assume the threat can be stopped at login or within email.
Where These Controls Break Down
Modern BEC attacks don’t stop at email—they move into the browser.
That’s where traditional security loses visibility.
- MFA doesn’t stop session hijacking
Attackers can bypass MFA by stealing session tokens after authentication - User training can’t catch everything
Highly targeted attacks—and techniques like gated phishing—are designed to evade detection by tools and users - Email and endpoint tools can’t see in-browser activity
Users input credentials and MFA codes into browser sessions but traditional tools can’t identify these activities
Closing the Gap with Browser-Level Visibility
The browser is where modern BEC attacks are executed, making it the only place where:
- Personal vs corporate account usage is visible
- Session behavior can be monitored in real time
- Sensitive actions can be controlled before data leaves
Browser-native security enables teams to:
- Detect suspicious activity during live sessions
- Prevent phishing and social engineering attempts in real time
- Monitor and control sensitive data movement
👉 Learn how:
Browser Data Loss Prevention (DLP)
https://keepaware.com/solutions/use-cases/browser-data-loss-prevention-dlp
Why Browser Detection and Response (BDR) Is Critical
BEC attacks succeed because they operate after authentication, inside trusted workflows.
Legacy tools focus on email and endpoints—but BEC attacks:
- Use valid credentials
- Occur in trusted applications
- Execute inside the browser
This is where Browser Detection and Response (BDR) becomes essential—providing the visibility and control needed to detect and stop attacks in real time.
Key Takeaways
- BEC attacks exploit trust, not malware
- They increasingly extend into browser and SaaS environments
- Techniques like gated phishing make them harder to detect
- Browser-native security is essential to stop modern BEC attacks
FAQs
What is a BEC attack?
A BEC attack is when an attacker impersonates a trusted contact, commonly to trick someone into sending money or sensitive information, or to compromise another account.
How is BEC different from phishing?
BEC uses targeted email account impersonation, while phishing may use BEC to initiate an attack but does not have to.
Why are BEC attacks hard to detect?
They often use real accounts and contain no malware, making them difficult for traditional tools to identify.
How can you prevent BEC attacks?
Use strong identity controls, employee training, and browser-level visibility into user activity.
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